1find the change in magnetic flux and use the relation
charge\,\: passed= \frac{\Delta \Phi}{R}
2 Answers
1
1select an element ∂x on either side of square at a distance x from the wire
now φ=B.A
=∫μoi2πx.l∂x
=μoil2π∫∂xx
vary integral frm 0 to 2l
we get
φ=μoil ln22π
now e=-∂φ∂t
→ i=eR
q=i∫∂t
q=μoil ln22πR